Sampling device



Aug. 15, 1950 B. WHITEHOUSE SAMPLING DEVICE Filed June 2, 1947 INVENTOR. BEN WHITEHOUSE BY E flTTOR/YEX Patented Aug. 15, 1950 SAMPLING DEVICE Ben Whitehouse, Milwaukee, Wis., assignor to Rodwell Omaha, Nebr.

Application June 2, 1947,

Engineering and Sales Qornp'ariy,

Se i l NQ- 751,163

2 Claims. (01. reggae) My invention relates to sampling devices and more particularly to a device forpermitting a small quantity of liquid under pressure to be dispensed for testing purposes.

It is manifest to anyone familiar with the operation of high or low pressure steam boilers, or hot water heating boilers, that it is desirable and, in fact, imperative that periodic tests be made to determine the condition of the water in the system. It is difiicult to obtain a truly representative sample from the boiler, due to the danger of unequal distribution of the sedimentation or sludge which collects at the bottom of the boiler, if there is not sufficient agitation by circulation provided, and it is quite necessary to include all the impurities contained in the water when obtaining a truly representative sample.

The object of my invention is to provide a device that may be attached to a pipe line through which the water is being circulated while the water is thoroughly agitated and having the sludge and impurities suspended therein, together with the chemicals for water treatment and other materials carried in solution.

Another object of my invention is to provide such a device that will in no manner affect the pressure maintained in the boiler or pipe line.

A still further object of my invention is to provide a device that may be installed within the circulatin line to the filter in the blow-off line of the water column, or in the continuous blowoff line, and will prevent the formation of flash steam which destroys a truly representative sample, and interferes with the draining of the sample.

Still another object of my invention is to construct a device that may be placed in the pipe line with ease, and without the necessity of a number of mechanical changes, thereby providing a device that is economical to construct and install.

With the foregoing and other objects in view which will be made known in the following description, the device is illustrated in the accompanying drawings in which Figure 1 is a cross-sectional view of the device showing the arrangement of the various valves and leads, with the device inserted into a pipe line such as a line leading from the boiler to a filter.

Figure 2 is a cross-sectional fragmentary view of the device with the valves arranged for normal operation, and

Figure 3 is a view similar to Figure 2 in which the valves of the device are arranged for draining a sample of the water being circulated.

Similar characters of reference indicate corresponding parts throughout the several views, and referring now to the same, the character shows a pipe line in the water system of a high or low pressure steam boiler or hot water heating boilers. This pipe line I ll may be providedfwith the necessary-valves as shown at H at theupper inlet end'as well as the valve 12 at the lower out} let end of a portionpf the line l0; 'There, is a coldwaterjacket indicated by the character l 3 which surrounds a portion of the pipe line H) and is shown welded at its top and bottom and w respectively.

The jacket l3 has a cold water inlet [5, at its upper end and a drain ll near its lower end provided witha valve [8, and the pipe line In equipped with a drain l9 shown provided with a spigot or pet cock 20 below the water jacket l3.

Obviously, if the pipe line H) extends from the boiler skimmer to a filter or to a boiler water column blow-off or continuous blow-off, the water in the pipe H3 is truly representative of the type of water within the boiler. Thus when installed in a continuous blow-oil line, or a line from the boiler to the filter, in either case while in operation, to obtain a sample of the water for analysis it is only necessary to close the valve 52. Next open the valve l6, thereby permitting cold water to circulate through the jacket l3 which surrounds a portion of the pipe l0.

Before taking a sample of the water within the portion of the pipe line H] surrounded by the jacket l3, it is necessary to crack the valve 20 to a point where flash steam forms and residual solids etc. have been discharged, and then close the valve until just a dribble of water discharges, which means that the flash steam and solids have been eliminated and the temperature of the water within the pipe line 10 is decreased to a temperature of 212 F. or below. It is then necessary to let the water flow out of the pet cock 2|] in a steady even stream and take this water as a sample, for at the temperature brought down by the cold water through the means provided by the jacket l3 surrounding that portion of the pipe I0, it will be a truly representative sample of the boiler water with the sludge particles and solids suspended therein, together with the chemicals of the water treatment and other materials held in solution.

The arrangement of the valves during this procedure is illustrated in a diagram shown in Figure 3, while the valves as shown in Figure 2 show the normal arrangement during the continuous operation of the boiler, continuous blowoff or water filter.

In the chosen embodiments of my invention exemplified by the foregoing description there are present many features not heretofore disclosed in the prior art. However, I have shown a particular arrangement of the component parts, but am fully cognizant of the fact that many changes in the form and configuration of the component parts may be made without effecting their operativeness, and I reserve the right to make such changes as I may deem convenient or necessary without departing from the spirit of my invention or the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent in the United States is:

1. A device of the character described comprising a pipe line provided with a drain cook, a water jacket surrounding a portion of said pipe line above said drain cock, said jacket provided with inlet and outlet tubes equipped with valves, suitable valves within said pipe line above said jacket, and below said cock, means for supplying cold water within said jacket for cooling the contents retained in that portion of the pipe line when the lower valve is closed, and enabling a sample of the contents of the pipe line to be drained through said drain cock when the temperature of said contents has been lowered by the cold water in said jacket.

2. A liquid sampling device of the character described comprising a portion of a pipe line leading from a reservoir containing an element at high temperature under pressure, said pipe line provided with suitable valves at its upper at a point below said jacket and above the lower valve in said pipe line, thereby providing a means of draining a portion of the contents of said pipe line when the lower valve thereof is closed and the temperature of the contents of that portion of said pipe line surrounded b said jacket has been lowered.

BEN WHITEHOUSE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 17,472 Rugg June 2, 1857 57,118 Githens Aug. 14, 1866 1,364,035 Carter Dec. 28, 1920 1,845,247 Davidson Feb. 16, 1932 2,030,682 Campbell Feb. 11, 1936 

